西北地质2017，Vol.50Issue(4)：59-69,11.
新疆阿尔泰克因布拉克铜锌矿区闪长岩锆石U-Pb年龄及地质意义
Zircon U-Pb Dating of Diorite from the Keyinbulake Cu-Zn Deposit in Altay, Xinjiang and Its Geological Implications
摘要
Abstract
The Keyinbulake copper-zinc deposit is located at Chonghuer volcanic-sedimentary basin in Southern Altay.Granite pluton was exposed widely in this deposit,where the ore body occurred in the exocontact zones between granite and Upper Silurian-Lower Devonian Kangbutiebao Formation.In the underground mining process,there are geological phenomena of the diorite vein interspersed with copper and zinc ore bodies and granite.Zircon LA-MC-ICP-MS U-Pb dating of diorite has yielded a weighted average age of 262.0±t2.1 Ma (MSDW=4.6),showing that the magmatic activitytook place in Middle-Late Permian.Combine with geological characteristic and the age of monzonitic granite,it's confined taht the Keyinbulake copper-zinc deposit was formed in the Early-Middle Permian,with an age of appreciably 278～262 Ma.关键词
闪长岩/U-Pb年龄/二叠纪/克因布拉克/阿尔泰Key words
granite/U-Pb dating/Permian/Keyinbulake/Altay分类
天文与地球科学引用本文复制引用
尚海军,陈维民,张耀选,张志欣..新疆阿尔泰克因布拉克铜锌矿区闪长岩锆石U-Pb年龄及地质意义[J].西北地质,2017,50(4):59-69,11.基金项目
国家科技支撑计划项目“阿尔泰重要成矿带成矿过程与靶区优选评价”(2011BAB06B03-02),国家自然科学基金“甘肃北山公婆泉斑岩铜矿床流体演化与成矿作用”(41272103)联合资助成果 （2011BAB06B03-02）
